Composition for bricks.



I06. COMPOSITIONS,

COATING OR PLASTIC.

UNITED STAE IS [fr l j/ffe mow) ,eea

PATENT OFFICE.

LAURENCE ELKUS, OF INDIANAPOLIS, INDIANA.

COMPOSITION FOR BRICKS- Specification of Letters Patent.

Patented Feb. 19, 1907;

Application filed June 1, 1906- Serial No. 319.756-

To aZZ whom it may concern.-

Be it known that I, LAURENCE ELKUS, of the city of Indianapolis, county of Marion, and State of Indiana, have invented a new and useful Improvement in Bricks, of which the following is a full, clear, and exact description.

The object of my invention is to provide a brick having;i fialbility to resistd dampness, moisture, an e to a reater e m triohaeg isrr The composition consists in mixing sand. cement, and lime in approximately the following proportions: szrnd -eighty-five per cent., )(85Z,;)Thyi(111 te d hmeten pe)r cing, cenen ve er cen (5%. 0 not wish, however, ti; bev confined to these exact proportions, as they may vary to the extent of three per cent. (3% greater or less,

of cement and three per cent., (3%,) greater or less of lime.

The process of manuiacture is as follows: Thenszgrd is introduced into a steel cylinder, where it is thoroughly dried. Lime is 13111- verized and slaked in a cylinder or other machine. Theliyd'r'ated lime, with the dried sand, is then mingled in a tube-niill with ground cement and thence discharged into a wet rrixer, consisting of a revolving pan with drop-bottom and paddles soarranged as thoroughly to agitate the rrixture. Ar rangement is made to spray water on this niixturej From. the nixer the rrcist material is taken to the press, where it is pressed into 'molds the size of bricks. The soft bricks are then taken to the hardening-cyl- 4 inders and are hardened under a stearr-pressure. While in the hardening cylinders steam-pressure of about one hundred and fifty pounds to the square inch is introduced,

and this steaniing continues for eight hours.

What I claim as my invention, and desire to secure by Letters Patent, is-

'In an artificial stone the combination of sand, hydratgdqlinze and cegrnent in suestantially the proportions specified:

In witnr ss whereof I have hereunto set my hand this 28th day of May, 1906.

LAURENCE ELKUS.

In presence of ETHEL KENNARD, CHAS. S. SYMONS. 

